Well, it took a lot longer than a week to get this done... Turns out that a 4" opening on a skimmer will not fit 4" PVC (due to the thickness of the wall. So I used 3" PVC coupler and a 4" plastic drain cover. The result is not pretty but appears to be doing a great job! And cost me less than $5.


Before
056B9728 3F17 4E82 989F D7360C4D6916 8036 000004F28330B84A zps45f5bc44 - recommendations for a DIY bubble plate

After
C06B63F3 58A2 4AB1 A5F4 0141C9207601 8036 000004F249309935 zpsfbca9f7e - recommendations for a DIY bubble plate

DF6B1575 14C9 425E 9365 43343BD0E245 8036 000004F2CF783D5A zps3a1eb257 - recommendations for a DIY bubble plate

Tom